MatlabRuby

This is a Ruby interface to the MATLAB Engine API and to the C/C++ Matrix Library API.

MATLAB needs to be installed and you need to know where the dynamically loaded library files are located. For example, in my installation (Ubuntu 14.04) MATLAB dlls are installed here: /usr/local/MATLAB/R2014a/bin/glnxa64

Add this line to your application's Gemfile:

gem 'matlab_ruby'

And then execute:

$ bundle

Or install it yourself as:

$ gem install matlab_ruby

Open the file lib/matlab_ruby.rb to see which functions of the APIs are interfaced via this gem. Not all functions are ready.

First you need to initialize the interface to the API implementations. Call .initialize and give the path to the MATLAB libs directory:

MatlabRuby.initialize('/usr/local/MATLAB/R2014a/bin/glnxa64')

Then you need to start the MATLAB engine.

matlab_engine = MatlabRuby.startEngine

And now you are ready to call API functions.

Example:

MatlabRuby.engEvalString matlab_engine, "x = 5;"

x_var   = MatlabRuby.engGetVariable matlab_engine, "x"

x_value = MatlabRuby.mxGetScalar(x_var)

MatlabRuby.engEvalString(matlab_engine, "clearvars x;")

puts "Value of 'x' is #{x_value}" # this should print out 5.0

In order to run the tests of this gem, you need to have the MATLAB engine installed and you need to have MATLAB_RUBY_LIBS_PATH environment variable set to the correct path to the MATLAB libs. You can do that inside the ".env.test" file

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/matlab_ruby. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.